linux-kernel - Re: [PATCH] bugfix: was Re: [ linus-git ] prctl(PR_SET_KEEPCAPS, ...) is broken for some configs, e.g. CONFIG_SECURITY

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Date:	Tue, 10 Jun 2008 17:39:32 -0700
From:	"Andrew G. Morgan" <morgan@...nel.org>
To:	"Serge E. Hallyn" <serue@...ibm.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] bugfix: was Re: [ linus-git ] prctl(PR_SET_KEEPCAPS,
 ...) is broken for some configs, e.g. CONFIG_SECURITY_SELINUX

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Serge E. Hallyn wrote:
+		else
+			current->securebits &=
+				~issecure_mask(SECURE_KEEP_CAPS);

| In these last two conditions, don't you need to set *rc_p?

| Oh, or my kernel tree may be out of date, as I seem to recall a recent
| patch initializing error to 0 in sys_prctl(), so this wouldn't
| technically be a problem?  Still would seem correct...

Yes, update your kernel and you will find this defaults to zero. I
thought about redundantly forcing it, but decided that it wasn't worth
the pain of working around the 80-column challenged extra indenting. :-(

Cheers

Andrew
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